My ex girlfriend and I broke up two and a half years ago. I broke up with her and realized I made a mistake six months after and I tried to get her back and she ignored me. I started dating another girl shortly after. My ex girlfriend came back a year later and texts and calls me sporadically but when she came back she had a boyfriend. She talks about her boyfriend and when I tried to see her a couple of times wouldn't see me because she has a boyfriend even though I have a girlfriend. Sometimes she will call late at night and my girlfriend will get back but when I call her back in the morning she won't respond. Why is she doing this and what's her point of contacting me?